Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
070012excellentexcellent21excellent
060012excellentexcellent11excellent
050010excellentexcellent11excellent
040011excellentexcellent21excellent
030023goodexcellent41excellent
020023goodexcellent41excellent
010028goodexcellent41excellent
000017goodexcellent21excellent
230015goodexcellent11excellent
220013goodexcellent11excellent
210011excellentexcellent11excellent
20009excellentexcellent11excellent
19007excellentexcellent11excellent
18006excellentexcellent11excellent
170032goodexcellent11excellent
16009excellentexcellent21excellent
150010excellentexcellent21excellent
140018goodexcellent21excellent
130016goodexcellent21excellent
120015goodexcellent31excellent
110018goodexcellent41excellent
100020goodexcellent41excellent
090022goodexcellent41excellent
080025goodexcellent41excellent